// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "ui/base/win/scoped_ole_initializer.h"

#include "base/logging.h"

namespace ui {

ScopedOleInitializer::ScopedOleInitializer()
    :
#ifndef NDEBUG
    // Using the windows API directly to avoid dependency on platform_thread.
    thread_id_(GetCurrentThreadId())
    ,
#endif
    hr_(OleInitialize(NULL))
{
#ifndef NDEBUG
    if (hr_ == S_FALSE) {
        LOG(ERROR) << "Multiple OleInitialize() calls for thread " << thread_id_;
    } else {
        DCHECK_NE(OLE_E_WRONGCOMPOBJ, hr_) << "Incompatible DLLs on machine";
        DCHECK_NE(RPC_E_CHANGED_MODE, hr_) << "Invalid COM thread model change";
    }
#endif
}

ScopedOleInitializer::~ScopedOleInitializer()
{
#ifndef NDEBUG
    DCHECK_EQ(thread_id_, GetCurrentThreadId());
#endif
    if (SUCCEEDED(hr_))
        OleUninitialize();
}

} // namespace ui
